Chinese social network Renren has released the first social network application to be selected by Microsoft for the app store of its Windows 8 operating system (OS), according to an announcement, made during Mobile World Congress this week.

Renren’s ‘high definition’ Windows 8 application — Renren HD — will be fully integrated with the OS, allowing content from applications, including multimedia, to be shared to the social network with just one click.

The company has also revealed that the app has been optimised for tablet usage, which it says will provide a “significantly enhanced user experience”.

Renren, which means ‘Everyone’ in Chinese, is the country’s largest real-name network, although it may soon lose that title when impending regulation forces users of Sina Weibo and Tencent Weibo to verify their identities. The move will see both sites operate real-name policies and, though they may lose some of their 300 million plus user bases, they are likely to be left with more members than Renren.

It has not been confirmed if Renren will feature in the localized version of ‘Tango’, Microsoft’s new Windows Phone 7 OS, but given the Windows 8 inclusion, we suspect that it will be included.